package com.sls.mall.member.exception;

/**
 * @author lixue
 * @Title: UsernameExistException
 * @ProjectName sls_mall2021
 * @Description: TODO
 * @date 2021/5/622:01
 */
public class UsernameExistException extends RuntimeException{

    public UsernameExistException() {

        super("用户名已存在");
    }
}
